public System.IO.Stream GetContent(RootName root, FileId source)
{
if (!_contentCache.ContainsKey(source))
{
var data = _localState.GetContent(root, source);
var evt = NetworkContentLocator.FromBytes(data.ReadFully());
var content = evt.MapOrContent;
if (evt.IsMap)
{
content = _imdStore.GetImDAsync(evt.MapOrContent).GetAwaiter().GetResult();
}
_contentCache[source] = content;
}
// If you create a MemoryStream over a pre-allocated byte array,
// it can't expand (ie. get longer than the size you specified when you started).
// The key is to use the empty (no params) MemoryStream() ctor, which creates it as expandable.
var ms = new System.IO.MemoryStream();
var bytes = _contentCache[source];
ms.Write(bytes, 0, bytes.Length);
ms.Seek(0, System.IO.SeekOrigin.Begin);
return(new System.IO.BufferedStream(ms));
}
public Task <byte[]> LoadContent(byte[] map) => _imdStore.GetImDAsync(map);